The word 'Celt' refers to the people who spoke Celtic languages across Western and Central Europe between 1,200 BC and the 3rd century, and every Celtic nation had its own unique crafts, arts, and treasures. The Gauls of modern France left behind the famous La Tène-style ceremonial Agris Helmet that was crafted around 350 BC, and a 1st century AD ceremonial Celtic bronze helmet was found in the river Thames by Waterloo bridge in 1868, the so-called Waterloo helmet. Between 200 BC and 300 AD Danish Celts forged the silver Gundestrup cauldron, which is the largest known example of European Iron Age silver work ever discovered, and Early Bronze Age Irish Celts left behind a moon-shaped gold lunula that was
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